Power-hammer.



No. 716,019. Patented nec. le, |902.

. H. FELnHus.

POWER HAMMER.

. (Application tiled May 3, 1902.)

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H. FELnHus.

POWER HAMMER.

(Application led May 3, 1902.)

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HEINRICH FELDHUS, OF HALLAM, NEBRASKA.

POWER-HAMMER.

SPECIFICATION forming part ofl Letters .Patent No. 716,019, dated December 16, 1902.

Application led May 3,1902. Serial No. 105,783. (No model.)

To all whom, iv' may concern.-

Be it known that I, HEINRICH FELDHUs, a citizen of the United States, and a resident of Hallam, in the county of Lancaster and State of Nebraska, have invented a new and Improved Power-Hammer, ot' which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved power-hammer which is simple and durable in construction, very effectivein operation, more especially designed fork light worksuch as hammering plowshares, plow-points, and other articles-and arranged to enable the operator to control the hammer for the latter to strike quick sharp blows or slow light blows, according to the nature of the work under treatment.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the 4accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure lis a front elevation of the improvement. Fig. 2 is aside elevation of the same. Fig. 3 is an enlarged front elevation of part of the frame. Fig. 4 is a transverse section of the same. Fig. 5 is a sectional plan view of the same on the line 5 5 of Fig. 3. Fig. 6 is a perspective view of part of one of the base I-beams. Fig. 7 is a similar view of a portion of one of the upright I-beams, and Fig. 8 is a sectional plan view of the improvement on the line 8 8 of Fig. 2.

The frame of the power-hammer is set on a suitable foundation A and consists, essentially, of a plurality of base I-beams B, B', and B2, spaced apart and receiving between them, at the rear ends, the two upright I- beams C C', as plainly indicated in the drawings, the base and upright I-beams being fastened together by transversely extending bolts D, and a bolt D' also connects the front ends of the base I-beams B B B2 with each other. A bolt E connects the upper ends of the upright I-beams C C with each other. (See Fig. 2.) The top and bottom iianges of the middle base I-beam B' are formed with notches B3, (see Fig. 6,) and similar notches are formed in the top and bottom inner Iianges of the outer base I-beams B B2 and the said notches are adapted to be engaged by corresponding notches C2, formed in the flanges of the'upright I-beams C C', so as to interlock the base and upright I-beams with each other. By this arrangement the beams forming the frame are prevented from shifting out of position relative one to the other, and thus produce a very strong durable frame.

On the front top portion of the base I-beams B B/ B2 rests the base F of an anvil-block F, carrying a suitable anvil F2, and the front end of the base F of the anvil-block is engaged by a transverse bar G, connected by bolts G with the foundation A, so as to securely hold the anvil-block F in position on the basebeams and to assist in holding the frame in position on the foundation. The rear end of the base F is engaged by bolts G2, (see Figs. l and 2,) extending downwardly between the base I-beams B B' and B' B2 to engage clamping-plates G2, abutting against the under side of the opposite flanges of the said base I- beams, as will be readily understood by reference to Fig. l. The rear ends of the base I-beams B, B', and B2 are engaged on top by a transverse bar G4 and connected by bolts G5 with the foundation A to securely hold the rear portion of the frame in position on the said foundation. Clamping-plates E and E2 engage the front and rear faces of the upright I-beams C C', as illustrated in Fig. 2, and the said clamping-plates are engaged by a bolt E3 to hold the plates in position and to assist in binding the upright beams in place.

A hammer H reeiprocates over the anvil F2 and is dovetailed in a dovetail formed in the under side of the cross-head H and is secured in place therein by al set-screw H2, as indicated in Figs. l and 2. The cross-head H is mounted to slide vertically in guideplates H2, (see Figs. l, 2, and 8,) fastened by bolts I to channel-irons I', bolted or otherwise fastened to the front Iianges of the upright I-beams C C. The bolts I extend through elongated slot-s in the guide-plates H3, and the said bolts also engage angle-irons I2 to fasten the latter to the front flanges of the channelirons I', and the said angle-irons I2 are provided with bolts I3, engaging the outer edges of the guide-plates H3 to adj ust the latter to ICO ward each other to take up all wear between the cross-head II' and its guide-plates H3. The channel-irons I are connected with each other by stay-bolts I4 (see Figs. 2 and 8) to strengthen the channel-irons.

The sides of the cross-head H are provided with lugs H4, on which are fulcrumed links J, extending outwardly and pivotally connected at their outer ends with the free ends of a leaf-spring K, connected at its middle portion with one end of a pitman L, engaging at its other end the wrist-pin N of a crankdisk N,`secured on the forward end of the main shaft O, journaled in suitable bearings P P', bolted to the upper ends of the upright I-beams C C at the front and rear faces thereof, so as to strengthen the frame of the powerhammer. On the shaft O is mounted loosely a driven pulley Q, adapted to be engaged by a friction-clutch R of any approved construction aud mounted to slide on and secured to the main shaft O, so that when the frictionclutch R engages the clutch member on the pulley Q then the shaft O is rotated to cause the latter to impart a reciprocating motion to the cross-head II and the hammer H by the action of the crank-disk N, pitman L, leafsprng K, and links J, fulcrumed on the said cross-head. The shifting lever R for the friction-clutch R is connected by a link: S with a bell-crank lever S, fulcrumed on the upright beams C C', and pivotally connected by links S2 with the treadle S3, fulcrumed on links S4, pivoted to the upright beams C C', as plainly indicated in the drawings, the said treadle S3 extending to the front of the foundation A, so as to be within convenient reach of the operators foot. Now when the operator presses the treadle S3 then the abovedescribed connection with the shifting lever R' imparts movement to the latter to move the friction-clutch R in frictional engagement with the driven pulley Q to cause rotation of the shaft O for the purpose previously stated. Now by the operator pressing the treadle S3 with more or less force the friction-clutch R is thrown in more or less frictional contact with the driven pulley Q to cause a more or less positive driving of the shaft O to regulate the force of the blow of the hammer H on the article under treatmeut and held on the anvil F2.

The wrist-pin N', previously mentioned, is preferably readily adjustable on the crankdisk N, so as to permit of varying the throw of the crank N and the stroke of the crosshead II and hammer H to adapt the hammer for larger or smaller work.

The entire machine is very simple and durable in construction, not liable to easily get out of order, and enables the operator to control the hammer for the latter to strike quick sharp blows or slow light blows, according to the nature of the work under treatment.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A power-hammer having a frame, comprising anged and spaced horizontal basebeams, flanged and spaced upright beams between the base-beams, the flanges of the beams being formed with interlocking notches, and bolts engaging the sets of beams, to fasten the same in position, as set forth.

2. A power-hammer having a frame, comprising a plurality of horizontal spaced I- beams for forming the base of the frame, the I-beams having notches in opposite top and bottom fianges, spaced upright I-beams extending between adjacent base I-beams and having notches to engage the notches in the base-beams, and bolts for fastening the base and upright beams together, as set forth.

3. A power-hammer having a pair of spaced upright I-beams, channel-irons secured to the front anges of the upright I- beams, cross-head guide-plates on the said channel-irons, angle-irons on the said channel-irons, bolts for securing the guide-plates and angle-irons to the channel-irons, and setscrews iu the said angle-irons, to engage and adjust the said guide-plates, as set forth.

4. In a power-hammer, the combination with a supporting-frame provided with forwardly-projecting lugs, of cross-head guideplates provided with slots, bolts passing through the frame and slots of the guideplates, and bolts carried by the lugs of the frame and engaging the outer edges of the guide-plates, for adjusting the same, as set forth.

In testimony whereof I have signed my namel to this specification in the presence of two subscribing witnesses.

HEINRICH FELDHUS.

Vitnesses:

HERMAN KERsENBRooK, JOHN RIPPEN. 

